ESP8266 WiFi Temp Humidity Monitoring Web App Using Arduino IDE 7 Circuit Diagram It's vital to monitor air quality to protect our health and reduce pollution levels. One of the most effective ways to monitor air quality is by using an air quality monitoring system. In this blog, we will discuss how to create an air quality monitoring system using NodeMCU or ESP8266, DHT21, Dust Sensor, MQ2, MQ4, MQ9, and MQ135 sensors.

This project implements an air quality monitoring system using an ESP8266 WiFi module, various sensors, and the ThingSpeak platform. The system measures environmental parameters such as CO2, temperature, humidity, CO, LPG, and smoke levels, providing real-time data and insights into air quality. These build instructions cover the ESP8266 based version of the AirGradient Open Air Outdoor monitor PCB version 0.4. If you have bought the kit from our shop with the ESP32-C3 based chip and PCB version > 1.0, please find your correct build instructions in this overview .

ESP8266 Based Air Pollution Detector Circuit Diagram
As concerns about air pollution grow globally, understanding and tracking air quality become paramount. This comprehensive guide will walk you through the step-by-step process of connecting the powerful SDS011 sensor with the versatile ESP8266, creating a cost-effective and efficient air quality monitoring system.

MQ135 Air Quality Sensor. The MQ-135 gas sensor senses the gases like ammonia nitrogen, oxygen, alcohols, aromatic compounds, sulfide and smoke.The MQ-3 gas sensor has a lower conductivity to clean the air as a gas sensing material. In the atmosphere, we can find polluting gases, but the conductivity of the gas sensor increases as the concentration of polluting gas increases.

Creating Your Own Air Quality Monitoring System with ESP8266 Circuit Diagram
Testing and calibrating the sensor. The initial step involves calibrating the sensor. To achieve this, connect the sensor to the circuit and allow it to remain powered on for 24 hours to complete
